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Finding the Fourth Proportional to 807,783.60, 1,128,685.20 and 807,783.60

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Solution

The fourth proportional to 807,783.60, 1,128,685.20 and 807,783.60 is: 1,128,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,783.60 : 1,128,685.20 = 807,783.60 : x
  2. Step 2: Convert to fraction form
    807,783.60/1,128,685.20 = 807,783.60/x
  3. Step 3: Cross multiply
    807,783.60x = 1,128,685.20 × 807,783.60
  4. Step 4: Simplify right side
    807,783.60x = 911,733,394,122.72
  5. Step 5: Solve for x
    x = 911,733,394,122.72/807,783.60
  6. Step 6: Final answer
    x = 1,128,685.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.